On Mon, Apr 25, 2016 at 07:25:55PM +0200, Stephan Mueller wrote: > Am Montag, 25. April 2016, 09:06:03 schrieb Andi Kleen: > > Hi Andi, > > > Sandy Harris <sandyinchina@xxxxxxxxx> writes: > > > > There is also the third problem of horrible scalability of /dev/random > > output on larger systems, for which patches are getting ignored. > > > > https://lkml.org/lkml/2016/2/10/716 > > > > Ignoring problems does not make them go away. > > I have seen your patches, but I am not fully sure I understand the root cause. > is the noise source handling the issue or the random number generation the > issue? Noise source handling is fine, the problem is the global locking on the entropy pools when generating random numbers. > If it is the latter, can you explain where the scalability issue comes in? A single pool which is locked/written to does not scale. Larger systems need multiple pools -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
